City-data.com crime rate counts serious crimes and violent crime more heavily. It adjusts for the number of visitors and daily workers commuting into cities.

According to our research of New Hampshire and other state lists there were 20 registered sex offenders living in Somersworth, New Hampshire as of August 17, 2017.The ratio of number of residents in Somersworth to the number of sex offenders is 588 to 1.The number of registered sex offenders compared to the number of residents in this city is near the state average.

See how dangerous Somersworth, NH is compared to nearest cities:(Note: Higher means more crime)